Species-dependent ion escape on Titan
文献类型：期刊论文
| 作者 | Jiang Fayu2; Cui Jun3 ; Xu Jiyao2; Wei Yong1
|
| 刊名 | Earth and Planetary Physics
 |
| 出版日期 | 2019 |
| 卷号 | 3期号:3页码:183 |
| 关键词 | Titan planetary ionospheres atmospheric escape |
| ISSN号 | 2096-3955 |
| 英文摘要 | Cassini observations over the past ten years have revealed that Titan possesses a chemically complex ionosphere. In this study, we investigate the relative contributions of different ion species to the total ion escape on Titan, by dividing all ion species probed by the Cassini Ion Neutral Mass Spectrometer (INMS) into six groups according to their mass-to-charge ratios (M/Z). For the three lightest ion groups, with characteristic M/Z of 22, 41, and 52 daltons, the observed scale heights tend to be lower than the scale heights predicted by assuming diffusive equilibrium; for the three heavier groups, observed and predicted scale heights are in general agreement, implying that most ion escape from Titan is by relatively light species, with M/Z < 60 daltons. A diffusion model is constructed to describe the density distribution of each ion group in regions where the effect of ionospheric chemistry could be neglected. The data model comparison predicts an optimal total ion escape rate of 3.1×10~(24) s~(–1), of which more than 99% is contributed by relatively light ions with M/Z < 32 daltons. |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/61509]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.中国科学院地质与地球物理研究所 2.中国科学院空间科学与应用研究中心 3.中国科学院国家天文台 |
| 推荐引用方式 GB/T 7714 | Jiang Fayu,Cui Jun,Xu Jiyao,et al. Species-dependent ion escape on Titan[J]. Earth and Planetary Physics,2019,3(3):183. |
| APA | Jiang Fayu,Cui Jun,Xu Jiyao,&Wei Yong.(2019).Species-dependent ion escape on Titan.Earth and Planetary Physics,3(3),183. |
| MLA | Jiang Fayu,et al."Species-dependent ion escape on Titan".Earth and Planetary Physics 3.3(2019):183. |
入库方式： OAI收割
来源：国家天文台
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